Automatic metal-working machine.



I. E. BRIGHTMAN.

AUTOMATIG METAL WORKING MACHINE.

APPLICATION FILED SEPT. 1, 1910.

Patentd Nov. 14,--1911.

2 SHEET$SHEET 1.

COLUMBIA PLANOURAFH CONWASHINOTOM n. c

F. E. BRIGHTMAN. AUTOMATIC METAL WORKING MACHINE.

APPLICATION TILED SEPT. 1, 1910.

1,008,586. Patented N0v.14, 1911.

2 8HEETBSHEET 2.

FIG. Z.

FIG. 5.

ATTORNEY cnLUMbIA PLANDGRAPH 120., WASHINGTON, D. C.

NTE

AE ATENT @FFTQE.

FRANK E. BRIGHTMAN, OIE SANDUSKY, OHIO, ASSIGNOR TO THE BRIGHTMAN HAM-MERED NUT AND MANUFACTURING COMPANY, OF SANDUSKY, OHIO, A CORPORA- TIONOF OHIO.

AUTOMATIC METAL-WORKING MACHINE.

Specification of Letters Patent.

Application filed September 1, 1910.

To all whom it may concern:

Be it known that I, FRANK E. BRIGHT- MAN, a citizen of the UnitedStates, and a resident of Sandusky, county of Erie, and State of Ohio,have invented a new and useful Improvement in Automatic Metal- WVorkingMachines, of which the following is a specification, the principle ofthe invention being herein explained and the best mode in which I havecontemplated applying that principle, so as to distinguish it from otherinventions.

My invention relates to automatic metal working machines and inparticular to that class of machines which are designed to successivelyform similar articles from a rod.

The present invention is an improvement on the machine disclosed inUnited States Patent No. 937,762 granted to me October 26, 1909.

The improvement relates particularly to the means for gaging the feed ofthe stock and to the means for supporting the tool during its work.

Other improvements will appear during the detailed description.

To the accomplishment of these and related ends said invention, then,consists, of the means hereinafter fully described and particularlypointed out in the claims.

The annexed drawings and the following description set forth in detailcertain mechanism embodying the invention such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.

In said annexed drawings :Figure 1 is partly a side elevation and partlya vertical section of a machine embodying my invention. Fig. 2 is abroken section on the line AA in Fig. 1, the knives being shown indotted lines; and Fig. 3 is a side elevation of a detail of the machineand partly broken away.

My invention is illustrated herein in a machine designed for cuttingsuccessive nuts from a bar of stock and drilling them at the same time.The machine will comprise a plurality of similar individual machines,and as these are duplicates of each other, one only has been shown inthe drawings.

The machine comprises end supports 1 in which is journaled a verticallydisposed rotatable spindle 2, which is hollow and through which thestock 3 is fed by gravity.

A vertically reciprocable cone sleeve 4 is mounted on the spindle 2, andby its reciprocation the sleeve 1 operates the arms 5 which, in turn,reciprocate a sleeve carried within the spindle 2. The inner sleevewhich is not shown constitutes, in conjunction with the spindle 2, theordinary chuck mechanism which intermittently grips the stock. Power istransmitted to the machine through pulley 6 which primarily rotates thespindle 2, and by means of belt 7 rotates the shaft 8 which carries aworm 9. The worm 9 meshes with a gear 10 which carries a lateral camtrack engaging a lever 11. Rotation of the gear 10 thus serves toreciprocate the cone sleeve 4.

The shaft 8, by means of gears 12, shaft 13, and chain 14, rotates atool carrying spindle 15 which is disposed below, and alined with, thework carrying spindle 2. A socket 17 is supported from the lower end ofthe tool spindle 15 and is rotatable relatively thereto. Disposedbetween the lower end of the spindle 15 and the bottom of the socket 17,is a ball 18 which thus forms a bearing for the rotation of spindle 15relatively to-the socket 17.

A bracket 19 is rigidly secured to the supports 1, and to its outer endare secured two members 20 which extend toward, but are spaced from,each other. Their adjacent ends are recessed, and the opening formed bythese recessed ends lies immediately above the tool spindle 15 andallows the tool 16 to extend therethrough during its operation. Twoknives 21 are journaled on a vertical post 28 supported from the bracket19 and the work carrying spindle 2.

An arm 22 is supported from the post 28, and at its outer end bears avertical screw 23 on which is threaded a member 21. The member 24extends into the path through which the stock 3 is fed, but lies to theside of the reciprocatory path of the tool 16. The member 24 thus formsan adjustable stop for gaging the length of the work fed from the workspindle.

The shaft 8 carries a worm 25 which meshes with a gear 26. Lateral cams27 carried by gear 26 operate the rearwardly extending arms 33 of theknives 21, a weight 29 normally holding such rear ends 33 together. Acam .30 carried by gear 26, by means of rod 31 and lever 32 reciprocatesthe tool spindle 15.

In operation, assume that the stock has dropped and has been gripped bythe chuck mechanism within the spindle. The work is being rotated in onedirection, while the tool is being rotated in an opposite direction, andat the same time moved upwardly. It thus drills a certain predetermineddistance into the end of the stock whereupon it is automaticallyretracted. When the drill is su'fiiciently withdrawn, the rear ends ofthe knives are automatically forced apart thus actuating the knives tocut the stock and the cut-oil portion will obviously constitute a nutwhich falls into a suitable receptacle. As soon as the cutting operationis complete, the knives are automatically withdrawn and at the same timethe chuck mechanism allows the stock bar to drop down through the workspindle. This downward drop is limited, however, by the stop which maybe adjusted to allow any length of stock to project from the spindle.The cycle of operation is then complete and the drill begins its workagain.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any of the followingclaims, or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as myinvention 1. In a machine of the class described, the combination of astock-holding spindle, a rotatable tool alined with said spindle, and atool-guide comprising two members spaced from each other and recessed attheir adjacent ends.

2. In a machine of the class described, the combination of astock-holding spindle, a rotatable tool alined with said spindle, atool-guide comprising two members spaced from each other and recessed attheir adjacent ends, and a gage disposed between said guide and spindleand outside of the reciproeatory path of said tool.

3. In a machine of the class described, the combination of astock-holding spindle disposed so that the stock may be fed therethroughby gravity, a rotatable tool alined with said spindle and reciprocabletoward and from the spindle, a guide for said tool, means forintermittently gripping the stock in said spindle, and a gagefor gagingthe length of stock fed through said spindle, said gage being disposedbetween said guide and spindle and outside of the reciprocatory path ofsaid tool.

at. In a machine of the class described, the combination of astock-holding spindle, a rotatable tool reciprocable toward and fromsaid spindle, a guide for said tool, and a gage disposed between saidguide and spindle and outside of the reciprocatory path of said tool.

5. In a machine of the class described,

combination of a stock-holding spindleqa rotatable tool reciprocabletoward and from said spindle, a guide for said tool, and a gage disposedbetween said guide and spindle and outside of the rec-iprocatory path ofFRANK E. BRIGHTMAN.

Attested by GEO. M. ZIMMERMAN, WM. F. SENN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

